18QHTF21-77.868-OE

Overview

The 18QHTF21-77.868-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 77.868 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable/disable functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency suffix matches the required 77.868 MHz specification. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD package footprint is compatible with the PCB layout. Check for any specific enable pin requirements in the system schematic.

Selection Notes

Select this component when a standard LVCMOS clock source is required at 77.868 MHz. The 1.8V operating voltage suits low-power digital designs. The enable feature allows for power management control. Verify that the 4-SMD package size fits within the available board space constraints.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies with LVCMOS outputs. These components are designed for general electronic applications requiring stable clock signals. The manufacturer has extensive experience in quartz crystal production.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical electrical specifications but different frequency suffixes. Cross-reference with similar 4-SMD LVCMOS oscillators from other manufacturers if availability is an issue.